A Scalable 128-Channel, Time-Multiplexed Potentiostat for Parallel Electrochemical Experiments

Electrochemical experiments like chronoamperometry or cyclic voltammetry (CV) are essential in the research for novel bioelectrochemical systems. These experiments, executed by a potentiostat, time-consuming which hinders progression. To speed up those this work presents potentiostat with 128 individual parallel stimulation and sensing channels. A channel architecture exploiting time division multiplexing is developed to minimize hardware cost area. Potential control done digital domain using Linear Quadratic Integral (LQI) controllers. The 128-channel implemented Printed Circuit Board (PCB) technology has $16 {\times }$ more channels than state of art low-cost potentiostats $4 lower cost-per-channel (5 $) area-per-channel (${93}\,mm^{2}$ ). Using parallelism, can be ${128\times faster, while conventional ${1}\, mV\,s^{-1}$ -CV $72\,\, faster sampling instead voltage sweeping.